SWAT vehicles now front & back of Metro bus. This is not your normal suspicious backpack episode.

A bomb squad, two SWAT teams and two bomb squad robots came to the scene to check out the mysterious object, which turned out to be a fake bomb from an earlier bomb training session by police, notes KOMO News.

An unidentified witness filmed the bomb squad using a robot to blow up the device (video below).

DB Gates, with King County Sheriff’s Office, told Q13FOX News that some members of the bomb squad realized what it was, but still had to follow the rules to make sure it wasn’t a real bomb.